Getting bit is an inevitability if you work with snakes long enough. It will hurt your daughter no more than it hurt you; certainly no more than a scuffed up knee and they don't keep kids from running around and playing. I suggest you have a talk with your daughter and explain what happened and how it felt. That said, my best guess with the information given is you startled a sleeping snake and got tagged. No big deal, no reason to expect your snake to turn into a demon now either. He is the same snake he was yesterday and will likely be the same snake tomorrow.